<!DOCTYPE html>
<html lang="zh">
  <head>
    <meta charset="UTF-8" />
  </head>
  <body>
    <script src="/js/react.development.js"></script>
    <script>
      let el = React.createElement(
        "button",
        { title: "按钮提示文字", className: "danger" },
        "提交"
      );
    </script>
  </body>
</html>
